hi forum,
i have a A4 1.8 TURBO 53reg BEX engine code
iv got a problem at higher revs i sometimes fel like im losing power in higher gears from about 5k upwards i can feel the power coming and going, the car is stock apart from a superchips remap, be4 i had this done i sometimes got a powert increase about 5k felt abit like when the vtec would change on a honda, but not so harsh, ive checked the MAF sensor and checked all wiring and even tryed a new unit but no change,
can ne1 help,
thanks dave

Hello dave welcome to Audi forum,

This problem is very common on A4's. This may be caused due to various number of reasons. The main suspect in 90% of these cases is the Mass Airflow Meter. In some cases it may be due to problems in the Inlet Manifold, turbo or Boost Leak/Boost control leak. In very rare cases Chipped cars/tuning boxes can also interfere with engine management causing the problems. The best thing to do would be to check for the Fault codes, so that the proper cause of the malfunction can be diagnosed and rectified. Hope you get it rectified soon.

Regards
R.B.N.J

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